/Engine/Plugins/Runtime/DataRegistry/Source/DataRegistry/Public/DataRegistry.h
Find the source associated with a lookup index
virtual [UDataRegistrySource](API\Plugins\DataRegistry\UDataRegistrySource) * LookupSource ( [FName](API\Runtime\Core\UObject\FName) & OutResolvedName, const [FDataRegistryLookup](API\Plugins\DataRegistry\FDataRegistryLookup) & Lookup, int32 LookupIndex ) const